LM123 STMICROELECTRONICS | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

THREE-TERMINAL 3A-5V POSITIVE VOLTAGE REGULATORS .OUTPUT CURRENT : 3A .INTERNAL CURRENT AND THERMAL LIMI- TING .TYPICAL OUPUT IMPEDANCE : 0.01Ω .MINIMUM INPUT VOLTAGE : 7.5V .POWER DISSIPATION : 30W

DESCRIPTION

The LM123, LM223, LM323 are three-terminal posi- tive voltage regulators with a preset 5V output and a load driving capability of 3A. New circuit design and processing techniques are used to provide the high output current without sacrificing the regulation characteristics of lower current devices. The 3A regulator is virtually blowout proof. Current limiting, power limiting and thermal shut- down provide the same high level of reliability ob- tained with these techniques in the LM209, 1A regu- lator. An overall worst case specification for the combined effects of input voltage, load current, ambient tem- perature, and power dissipation ensure that the LM123, LM223, LM323 will perform satisfactorily as a system element. TO-3 PIN CONNECTION 1 - Input 2 - Output TO-3 (bottom view) ORDER CODES Part Number Temperature Range Package KT LM123 -55 oC to 150oC • LM223 -25 oC to 150oC • LM323 0 oC to 125oC •• TO-220 TO-220 (front view) 1 - Input 2 - Output 3 - GND

Symbol Parameter Value Unit VI Input Voltage 20 V IO Output Current Internally Limited Ptot Power Dissipation Internally Limited Toper Operating Junction Temperature Range LM123 -55 to 150 oC LM223 -25 to 150 LM323 0 to 125 Tstg Storage Temperature Range -65 to 150 oC THERMAL CHARACTERISTICS Symbol Parameter Typ. Max. Unit R thj-case Junction-case Thermal Resistance TO-3 2 oC/W TO-220 3 R thj-amb Junction-ambient Thermal Resistance TO-3 35 oC/W TO-220 50 LM123-LM223-LM323

LM123: -55 oC<T j<1 5 0 oC LM223: -25 oC<T j<1 5 0 oC LM323: 0 oC<T j<1 5 0 oC Symbol Parameter LM123/LM223 LM323 Unit VO Output Voltage Range (Note 2) Tamb =2 5oC, VI= 7.5 V, IO =0 4.7 5 5.3 4.8 5 5.2 V VO Output Voltage Range (Note 2) Tmin ≤ Tj≤ Tmax ,P ≤ Pmax

7.5 V≤ VI ≤ 15 V, 0≤ IO ≤ 3A

4.6 5.4 4.75 5.25 V K VI Line Regulation (Note 3) Tj=2 5oC, 7.5 V≤ VI ≤ 15V 5 25 5 25 mV KVO Load Regulation (Note 3) Tj=2 5oC, VI = 7.5 V, 0≤ IO ≤ 3A 25 100 25 100 mV IIB Quiescent Current Tamb =2 5oC, 10 Hz≤ f≤ 100 KHz 40 40 µVrms IOS Short Circuit Current Limit (Tj=2 5oC) VI =1 5V VI = 7.5V 4.5 4.5 A A KVH Long Term Stability 35 35 mV Notes : 1. Although power dissipation is internally limited, specifications apply only for P ≤ 30W. 2. Selected devices with tightened tolerance output voltage available. 3. Load and line regulation are specified at constant junction temperature. Pulse testing is required with a pulse width ≤ 1ms and a duty cycle≤ 5%. LM123-LM223-LM323

BASIC 3A REGULATOR TRIMING OUTPUT TO 5V C 1 = Required if regulator is distant from filter capacitors. C L = Regulator is stable with no load capacitor into resistive loads. LM123-LM223-LM323

10A REGULATOR WITH COMPLETE OVERLOAD PROTECTION * Selected for 20mA current from unregulated negat ive supply . ** Solidtantalum. A = LM101A, LM201A, LM301A. ADJUSTABLE REGULATOR 0 – 10V/3A A1 = LM 101 A, LM 201 A, LM 301 A. C1 = 2µF optional - improves ripple rejection, noise and transient response. LM123-LM223-LM323

DIM. mm inch A 11.00 13.10 0.433 0.516 B 0.97 1.15 0.038 0.045 C 1.50 1.65 0.059 0.065 D 8.32 8.92 0.327 0.351 E 19.00 20.00 0.748 0.787 G 10.70 11.10 0.421 0.437 N 16.50 17.20 0.649 0.677 P 25.00 26.00 0.984 1.023 R 4.00 4.09 0.157 0.161 U 38.50 39.30 1.515 1.547 V 30.00 30.30 1.187 1.193 C D N B V U R AP E G O P003F TO-3 MECHANICAL DATA LM123-LM223-LM323

DIM. mm inch A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 1.27 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 0.409 L2 16.4 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.2 15.9 0.598 0.625 L7 6.2 6.6 0.244 0.260 L9 3.5 4.2 0.137 0.165 A C D E F G Dia. TO-220 MECHANICAL DATA P011C LM123-LM223-LM323

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specificationsmentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronicsproducts are not authorized foruse ascritical componentsin life support devices or systems without express written approval of SGS-THOMSON Microelectonics.  1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A LM123-LM223-LM323